Dichlorovinyl thionophosphoric acid diester amides

ABSTRACT

Dichlorovinylthionophosphoric acid diester amides of the formula   in which R is alkyl of one to eight carbon atoms or lower alkoxy-lower alkyl, WHICH POSSESS INSECTICIDAL, ACARICIDAL AND FUNGICIDAL PROPERTIES.

United States Patent [19! Colln et al.

[ Aug. 26, 1975 12| Appl. M04241 [30] Foreign Application Priority Data Jam 1| IUTZ (iurmunymi. 1103855 [52] US. (L i, 260/957; 260/950; 424/2I7; 424/1) |5|| Int. ('1. 4 v i v i i i AOln 9/36; C(I'It 9/24 [58] Field (If Search i v i i i i i ZhU/JSI, 950

15h] References Cited UNITED STATES PATEN'I'S 3264 l X4 M1966 (kigur L'I ;l|. 260/951) X Sirrcnhcrg ct ul. 260/957 Suloway ct all .i 2610/957 Primary l;.\uniim'rLorraine Av Wcinbcrgcr Antwan! Examiner-Richard L. Raymond Armmcy, Agent. or FirmBurgcss, Dinklagc & Sprung [57} ABSTRACT Dichlomvinylthiunnphusphnric acid diestcr amides of the formula in which R is ailkyl of 0m: to eight carbon atoms or lower alkoxy-luwcr alkylv which pusscss insecticidal. ucaricidail and fungicidal properties.

8 Claims, N0 Drawings DICHLOROVINYL THIONOPHOSPHORIC ACID DIESTER AMIDES The present invention relates to and has for its objects the provision of particular new dichlorovinylthionophosphorit: acid diester amides. i.e.. O-( lower alkyl or lower alkoxy-lower alkyl)-N-(unsubstituted)- dichlorovinylthionophosphoric acid diester amides. which possess insecticidal. acaricidal and fungicidal properties. active compositions in the form of mixtures of such compounds with solid and liquid dispersible carrier vehicles. and methods for producing such compounds and for using such compounds in a new way especially for combating pests. e.g. insects. acarids and fungi. especially insects and acarids. with other and fur ther objects becoming apparent front a study of the within specification and accompanying examples.

It is known from published Dutch Patent Application 6.806.396 that O-alkyl-O-(2.2-dichlorovinyl)- phosphoric acid diestcr amides. such as O-npropyl- {Compound A) or O-isopropyl-O-t2.2-dichlorovinyllphosphoric acid diester amide (Compound 8). possess insecticidal and acaricidal activity.

The present invention provides dichlorovinylthionophosphoric acid diester amides of the general formula in which R is alkyl of one to eight carbon atoms or lower alkoxy-lower alkyl.

R is preferably straight or branched alkyl of one to seven carbon atoms. especially lower alkyl. or alkoxyalkyl with one to four. especially one to three carbon atoms in each of the alkyl and alkoxy moieties.

Surprisingly. the dichlorovinylthionophosphoric acid diester amides according to the invention are distinguished by a considerably better insecticidal. acaricidal and. in some cases, fungicidal. activity than the known compounds of analogous constitution and of the same direction of activity. The substances according to the invention therefore represent a genuine enrichment of the art.

Moreover. the compounds according to the invention contribute to the satisfaction of the ever-increasing demand for new active compounds in the field of pesticides. with a view especially to improvements in the protection of the environment. which renders desirable compounds with low toxicity to warm-blooded animals and low phytotixicity. more rapid degradation in and on the plant in short time intervals to be observed between spraying with pesticide and harvesting. effective ness against resistant pests. etc.

In addition. the novel compounds are characterized by activity against Rhopalosiphum. Myzus and Tetranychus which is markedly superior to that of their N- methyl counterparts which are disclosed and claimed in LES. Patv application Ser. No. 267,759. filed June 30. 1972. now pending.

The invention also provides a process for the production of a dichlorovinylthionophosphoric acid diester amide of the formula (I) in which a dichlorovinylthionophosphoric acid ester diamidc of the formula cac=ui-o Jaw. (III is reacted with a hydroxy compound of the general formula HOR (III) in which R has the meaning stated above and hydrogen chloride is supplied to the reaction mixture. An equivalent amount of hydrogen chloride is naturally normally used.

If 0-( 2.2-dichlorovinyl )-thionophosphoric acid ester diamide and n-butanol are used as starting materials. the reaction course can be represented by the following formula scheme:

As examples of hydroxy compounds to be used in the process. there are mentioned in particular: methanol. ethanol. nor iso-propanol. 11-. sec.-. isoor ten.- butanol. n-. isoor neo-pentanol. n-hexanol. nheptanol. n-octanol. Z-ethyl-butanol. 2.2 dimethylbutanol. Z-ethylhexanol. 2.2 dimethylhexanol. and methyl-. ethyl-. or propylglycol.

The hydroxy compounds (Ill) and the O-(Z.2- dichlorovinyl )-thionophosphoric acid ester diamide (II) required as starting materials are known from the literature and are readily available on an industrial scale.

The process of the invention is preferably carried out in the presence of a suitable solvent or diluent. For this purpose there may be used an excess of the hydroxy compound. but inert organic solvents are also suitable. Preferred examples include ethers. such as diethyl or dibutyl ether and dioxane'. carboxylic acid esters. such as methyl or ethyl acetate; and nitriles. such as acetonitrile and propionitrile.

The reaction temperature can be varied within a fairly wide range. In general. the reaction is carried out at about 20 to 120, preferably at 40 to C.

The reaction is. in general. carried out at normal pressure.

The reaction is expediently effected by forming a solution of the O42.2-dichlorovinyl)-thionophosphoric acid ester diamide. together with the hydroxy compound (lll) concerned. in a suitable solvent of diluent. preferably an excess of the hydroxy compound. and adding to this solution. with external cooling. the equivalent amount of hydrogen chloride (preferably by in troduction of gaseous hydrogen chloride). After the mixture has been stirred for one to several hours at the temperatures stated. it may be cooled. rendered alkaline with a little gaseous ammonia. and clarified by ad dition of activated charcoal. The further working up of the mixture may take place in known manner by filtra tion of the undissolvcd components. evaporation of the 3.9(ll.95b

3 solvent from the filtrate. renewed dissolving of the residue in an organic solvent. washing. drying and renewed evaporation of the solvent. preferably under reduced pressure.

The substances according to the invention are obtained in most cases in the form of oils which sometimes cannot be distilled without decomposition but can. by so-called slight distillation" (that is. by longer heating at moderately elevated temperature under reduced pressure). be freed from the last volatile components and in this way can be purified. For their characterization. the refractive index and/or boiling point may be used.

The new dichlorovinylthionophosphoric acid diester amides are distinguished by an outstanding insecticidal (including also soil-insecticidal) and acaricidal effectivcness against crop pests. hygiene pests and pests of stored products. as well as ectoparasites. They possess a good activity against both sucking and eating insects. and mites (Acarina). At the same time they exhibit a low phytotoxicity and. in some cases. a fungicidal effeet. The products according to the invention are therefore suitable for use as pesticides. preferably in crop protection and the protection of stored products. as well as in the hygiene and veterinary field.

To the sucking insects there belong. in the main. aphids (Aphidae) such as the green peach aphid (Myzus persicue). the bean aphid (Dora/is fahue). the bird cherry aphid (Rlmpulosiplzum pudi). the pea aphid (Macrnsi'phum pisi) and the potato aphid (MQCFUSfplmm solunijblii). the currant gall aphid (Crvpmmyzus Iturschelti). the rosy apple aphid (Suppuphis mall). the mealy plum aphid (Hyulopterus urundi'nis) and the cherry black-fly (Myzus ccrusi); in addition. scales and mealybugs (Coccina). for example the oleander scale (Aspidiutus lzederue) and the soft scale (Lecum'um hesperidum) as well as the grape mealybug (Pseudococcus muririmus); thrips (Thysanoptera). such as Hercinuthrips femoralis. and bugs, for example the beet bug (Plasma quadrant the red cotton bug (Dysdercus intermedius). the bed bug (Cimex leciularius). the assassin bug (R/mdnl'us pro/Luis) and Chagas' bug Triummu infestam') and. further. cicadas. such as Euscelis hi'lohutus and Nephrnerhilv hipuncmtus.

ln the case of the biting insects. above all there should be mentioned butterfly caterpillars (Lepidoptera) such as the diamond-back moth (llurella muculipenni's). the gypsy moth (Lymunlrlu dispar). the browntail moth (Eupmclis c/irvsurrhueu) and tent caterpillar (Malamsomu neusrriu); further. the cabbage moth (Mamcstru hrassicae) and the cutworm (Agmris segcmm). the large white butterfly (Pieris hrussir-ue). the small winter moth ((heimumhia hrumulu). the green oak tortrix moth (Torlrix viridunu). the fall armyworm (Laphygmu frugiperdu) and cotton worm (Prudeniu lituru). the ermine moth (Hypmmmemu padella). the Mediterranean flour moth tEphesria kuhniella) and greater wax moth (Galleria mellunellu).

Also to be classed with the biting insects are beetles (Colcoptera). for example the granary weevil (.S'in phi/us grunurius ('ulundra grunuriu), the Colorado bcttle (Lepiinolursu decemlineutu). the dock beetle (Gustmplrvsa i'iridulu). the mustard beetle (llmedmi cochlear-me). the blossom beetle [Mvli'gerhes ueneus). the raspberry beetle (.Byiurm runmimsus). the bean weevil (Brut'lzidius .4LLlll1/").Xtt'ffdt'8 obteclux). the leather beetle (Dt'rmesles fl'lSF/lll. the khapra beetle ('I'rugmlermu grunurium). the flour beetle ('I'rilmlium cusraru'lmil. the northcin corn billbug (Oriana/m or Slurp/aim autumn). the drugstore beetle (Su'guhium unlit-0mm. the yellow mealworni ('l'r'm'hriu mulimr) and the saw -toothed grant bcctlc [(h'tllll'P/lflllb' .\lll'llltl menus]. and also species living in the soil. for example \vireworms (Agriotcs spec.) and Ian ae of the cockchafer til/lclolmilliu melolmirliu I; cockroaches. such as the German cockroach (lilurlt'llu gt'rmuiticu). American cockroach (Pcriplauelu tlHllI'lCUIll/l. madeira cockroach (LUlltOfI/ltltd or Rliyparnhiu madame]. oriental cockroach (Blumi oriemalis). the giant cockroach (Bluhcrus gigunreus) and the black giant cockroach (BlU/MFHSfllSL'HSl as well as llenst'lmmcdeniuflexivilm: jiirr/ier. ()rrhupreru. for example the house cricket (AC/IL!!! domestic-us); termites such as the eastern subterranean termite (Rerirulilermmfluvipes) and Hymenoptera such as ants. for example the garden ant (Lusius Niger).

The Diptera comprise essentially the flies. such as the vinegar fly (Drnsuplil'lu mclunngusler). the Mcditcrranean fruit fly (Cerarilis capimru). the house fly (Must'u donwsrit'u the little house fly (Furmiu cum'c'uluri's'l. the black blow fly (Plmrmia angina) and bluebottle fly (Culllplmru eryrhmceplmla) as well as the stable fly (Smmovys Ld/(llltlHSl further. gnats. for example mosquitoes such as the yellow fever mosquito (Aedes ae gypri). the northern house mosquito ((ulex pipiens) and the malaria mosquito (Anopheles .rtephensi).

With the mites (Acari) these are classed. in particular. the spider mites (Tetranychidae such as the twospotted spider mite ('I'crrunyc/ms urlicue) and the Euro pean red mite ((Pururetrunyt-Iius pilusus Pummychus ulmi). gall mites. for example the black current gall mite tEriop/rvvs rihis] and tarsonemidcs. for example the broad mite (Hemitursonemus laws) and the cycla men mitc (Tarsrmemus' pulli'dui'); finally. ticks. such as the relapsing fever tick (Omit/rodents muuhata).

When applied against hygiene pests and pests of stored products. particularly flies and mosquitoes. the process products are also distinguished by an outstanding residual activity on wood and clay. as well as a good stability to alkali on limed substrates.

The active compounds according to the instant invention can be utilized. if desired. in the form of the usual formulations or compositions with conventional inert (i.e.. plant compatible or herbicidally inert) pesticide diluents or extenders. i.c.. diluents. carriers or extenders of the type usable in conventional pesticide for mulations or compositions. e.g. conventional pesticide dispersible carrier vehicles such as gases. solutions. emulsions, suspensions. emulsifiable concentrates. spray powders. pastes. soluble powders. dusting agents. granules. etc. These are prepared in known manner. for instance by extending the active compounds with conventional pesticide dispersible liquid diluent carriers and/or dispersiblc solid carriers optionally with the use of carrier vehicle assistants. e.g. conventional pesticide surface-active agents. including emulsifying agents and/or dispersing agents. whereby. for example. in the case where water is used as diluent. organic solvents may be added as auxiliary solvents. The following may be chiefly considered for use as conventional carrier vehicles for this purpose: aerosol propellants which are gaseous at normal temperatures and pressures. such as freon; inert dispersiblc liquid diluent carriers. including inert organic sobents. such as aromatic hydrocarbons (e g. bcn7ene. toluene. xylene. alkyl naphthalenes. etc. halogenated. especially chlorinated. aromatic hydroearbons (cg. chlorobenyenes. etc]. cycloalkanes leg. cyclohexane. etc.). paraffins [c.g. petroleum or mineral oil fractions]. chlorinated aliphatic hydrocarbons [c.g. methylene chloride. chloroethylenes. etc.). alcohols (cg. methanol. ethanol. propanol. butanol. glycol. etc.) as well as ethers and esters thereof (eg glycol monomethyl ether. etc]. amines [c.g. ethanolamine. etc). amides (cg. dimethyl forntamide. etc). sulfoxidcs (c.g. dimethyl sulfoxide ctc.lacetonitrile. ketones [c.g. acetone. methyl ethyl ketone. methyl isobutyl ketone. cyclohexanonc. etc.). and/or water; as well as inert dispersible finely divided solid carriers. such as ground natural minerals (cg. kaolins. clays. alumina. quartz silica. chalk. i.e.. calcium carbonate. talc. attapulgite. montmorillonitc. kiesclguhr. etc.) and ground synthetic minerals [c.g. highly dispersed silicic acid. silicates. eg. alkali silicates. etc): whereas the following may be chiefly considered for use as conventional carrier vehicle assistants. e.g. surface-active agents. for this purpose: emulsifying agents. such as non-ionic and/or anionic emulsifying agents (e.g. polyethylene oxide esters of fatty acids. polyethylene oxide ethers of fatty alcohols. alkyl sulfates. alkyl sulfonates. aryl sulfonates. albumin hydrolyzates. etc.. and especially alkyl arylpolyglycol ethers. magnesium stearate. sodium oleate. etc. and/or dispersing agents. such as lignin. sulfite waste liquors. methyl cellulose. etc.

Such active compounds may be employed alone or in the form of mixtures with one another and/or with such solid and/or liquid dispersible carrier vehicles and/or with other known compatible active agents. especially plant protection agents. such as other insecticides. acaricides and fungicides. or rodcnticidcs. bactcricides. nematocides. herbicides. fertilizers. growth-regulating agents. etc.. if desired. or in the form of particular dosage preparations for specific application made therefrom. such as solutions. emulsions. suspensions. powders. pastes. and granules which are thus ready for use.

As concerns commercially marketed preparations. these generally contemplate carrier composition mixtures in which the active compound is present in an amount substantially between about 0.1-9571 by weight. and preferably 05-90% by weight. of the mix turc. whereas carrier composition mixtures suitable for direct application or field application generally con template those in which the active compound is present in an amount substantially between about 00001-1071. preferably 0.0l-l71. by weight of the mixture. Thus. the present invention contemplates over-all composi tions which comprises mixtures of a conventional dispersiblc carrier vehicle such as l) a dispcrsible inert finely divided carrier solid. and/or (2) a dispersible carrier liquid such as an inert organic solvent and/or water preferably including a surface-active effective amount ofa carrier vehicle assistant. e.g. a surface-active agent. such as an emulsifying agent and/or a dispersing agent. and an amount of the active compound which is effec tive for the purpose in question and which is generally between about 0.0()0l95/r. and preferably (NH-9571. by eight of the mixture.

The active compounds can also be used in accor dance with the well known ultra-low-volumc process with good success. i.e.. by applying such compound is normally a liquid. or by applying a liquid composition containing the same. via very effective atomizing equipment. in finely divided form. eg. average particle diameter of from 50-l00 microns. or even less. i.e.. mist form. for example by airplane crop spraying tech niques. ()nly up to at most about a few liters/hectare are needed. and often amounts only up to about to L000 g/hectare. preferably 40 to (100 g/heetare. are sufficient. In this process it is possible to use highly concentrated liquid compositions with said liquid carrier vehicles containing from about to about 95% by weight ofthe active compound or even the l007r active substance alone. e.g. about Z(ll00 by weight of the active compound.

Furthermore. the present invention contemplates methods of selectively killing. combating or controlling pests. e.g. insects. acarids and fungi. and more particularly methods of combating at least one of insects and acarids. which comprises applying to at least one of correspondingly (u) such insects. (1:) such acarids. (1') such fungi. and (d) the corresponding habitat thereof. i.e.. the locus to be protected. a correspondingly combative or toxic amount. i.e.. an insccticidally. acaricidally or fungieidally effective amount. of the particular active compound of the invention alone or together with a carrier vehicle as noted above. The instant formulations or compositions are applied in the usual manner. for instance by spraying. atomizing. vaporizing. scattering. dusting. watering. squirting. sprinkling. pouring. fumigating. and the like.

It will be realized. of course. that the concentration ofthe particular active compound utilized in admixture with the carrier vehicle will depend upon the intended application. Therefore. in special cases it is possible to go above or below the aforementioned concentration ranges.

The synthesis. unexpected superiority and outstanding acitivty of the particular new compounds of the present invention are illustrated. without limitation. by the following examples:

EXAMPLE I LT test for Diptera Test insects: Musz'u dnmesricu Solvent: acetone 2 parts by weight of active compound were dissolved in lOOO parts by volume of solvent. The solution so obtained was diluted with further solvent to the desired lower concentrations.

2.5 ml of the solution of active compound were pipetted into a Petri dish. On the bottom of the Petri dish there was a filter paper with a diameter of about 9.5 cm. The Petri dish remained uncovered until the solvent had completely evaporated. The amount of active compound per square centimeter of filter paper varied with the concentration of the solution of active compound used. About 25 test insects were then placed in the Petri dish and it was covered with a glass lid.

The condition of the test insects was continuously ob served. The time which was necessary for a l0071 knock down effect was determined.

The test insects the active compounds. the concentrations of the active compounds and the periods of time at which there is a 10071 knock down effect can be seen from the following Table l.

Table l (LT test for Diptera l Muscat domestic-at Active compounds Concentration of actiu: compound LT ol the solution in by weight CH;,-CH ,CH,O ll

P()-CH=CCL, 02 till H- N 0.02 Bh=90 9% (known) (A) 0 t(H.,n-CH-0 ll 0.: 4o

POCH=C('I, (LUZ I N 0.002 Kh=l00 '4 (known) (B) S 02 I5 CH; ll (H12 3t! P'OL i L v l 0.002 95' H,N (moo: 270' S L-,H .0 ll 0.: l5 PO(.H=("Cl- (2) 0.02 H N 0.002 90' 0.0002 t'lh 0.00002 8h=90 "i S nC H,0 [3) 0.2 20 P0CH=C(L 0.02 40 H: 0.002 130' 0.0002 190' S ictH.0 ll

POCH=(.Cl to) 0.2 20 H -N 0.02

0.002 till) 5 iC,H,() ll 02 25 P-OCH=CCI- t 5 I 0.02 75' H N out): 240' Table Z-eontinued EXAMPLE 2 tLT test for Diptcra Aedes aegypti) Test insects; Aedes aegypti Solvent: acetone 2 parts by weight of active compound were dissolved in 1000 parts by volume of solvent. The solution so ob tained was diluted with further solvent to the desired lower concentrations.

2.5 ml of the solution of active compound were pipetted into a Petri dish. On the bottom of the Petri dish there was a filter paper with a diameter of about 9.5 cm. The Petri dish remained uncovered until the solvent had completely evaporated. The amount of active compound per square meter of filter paper varied with the concentrations of the solution of active compound used. About 25 test insects were then placed in the Petri dish and it was covered with a glass lid.

The condition of the test insects was continuously observed. The time which was necessary for a l00'71 destruction was determined.

The test insects the active compounds. the concen trations of the active compounds and the periods of time at which there is a 10071 destruction can be seen from the following Table 2.

Table 2 lknown) 1A l Active compounds Concentration EXAMPLE 3 LD test Test insects: Periplanera ameri'r'ana Solvent: acetone 2 parts by weight of the active compound were dissolved in 1000 parts by volume otthe solvent. The solu t'ton so obtained was diluted with further solvent to the desired concentration.

2.5 ml of the solution oi the active compound were pipetted into a Petri dish. On the bottom of the Petri dish there was a filter paper with a diameter of about 9 9.5 cm. The Petri dish remained uncovered until the solvent had completely evaporated. The amount of active compound per square meter of filter paper varied with the concentration of the solution of active compound used. About 10 test insects were then placed in the Petri dish and it was covered with a glass lid.

The condition ot the test insects was observed 3 days after the commencement of the experiments. The destruction was determined as a percentage.

The active compounds. the concentrations of the active compounds. the test insects and the results can be seen from the following Table 3.

Table 3 (1.0 test l Periplaneta antericana) EXAMPLE 4 LD Test insects: Sirophilus granurius Solvent: acetone 2 parts by weight of the active compound were dissolved in 1000 parts by volume of the solvent. The solution so obtained was diluted with further solvent to the desired concentration.

2.5 ml of the solution of the active compound were pipetted into a Petri dish. On the bottom of the Petri dish there was a filter paper with a diameter of about 9.5 cm. The Petri dish remained uncovered until the solvent had completely evaporated. The amount of active compound per square meter of filter paper varied with the concentration of the solution of active compound used. About 25 test insects were then placed in the Petri dish and it was covered with a glass lid.

The condition ofthe test insects was observed 3 days after the commencement of the experiments. The destruction was determined as a percentage.

The active compounds. the concentrations of the active compounds. the test insects and the results can be seen from the following Table 4.

Table 4 tLl) test Sitophilas granariusl Active compounds Concentration EXAMPLE 5 Phaedon larvae test Solvent: 3 parts by weight acetone Emulsificr: 1 part by weight alkylarylpolyglycol ether To produce a suitable preparation of active compound. 1 part by weight of the active compound was mixed with the stated amount of solvent containing the stated amount of emulsifier. and the concentrate was diluted with water to the desired concentration.

Cabbage leaves (Brassica oleruceu) were sprayed with the preparation of the active compound until dripping wet and were then infected with mustard beetle larvae (P/taedon coc/tleariae After the specified periods of time. the degree of destruction was determined as a percentage: i007: means that all the beetle larvae were killed. ()7: means that none of the beetle larvae were killed.

The active compounds. the concentration of the ac tive compounds. the times ofevaluation and the results can be seen from the following Table 5.

Table S-continued (Phaedon lanae test) Actiw compounds (nneentratlon EXAMPLE 6 Myzus test (contact action) Solvent: 3 parts by weight acetone Emulsificr: 1 part by weight alkylarylpolyglycol ether To produce a suitable preparation of active compound. 1 part by weight of the active compound was mixed with the stated amount of solvent containing the stated amount of emulsifier and the concentrate was diluted with water to the desired concentration.

Cabbage plants (Brassieu ulerucea) which had been heavily infested with peach aphids (Myzm perxit'ue) were sprayed with the preparation of the active com pound until dripping wet.

After the specified periods of time. the degree ot'destruction was determined as a percentage: 100% means that all the aphids were killed whereas 0% means that none of the aphids were killedv The active compounds. the concentrations of the active compounds. the evaluation times and the results can be seen from the following Table 6:

Table 6 lM)/.us lest contact action! EXAMPLE 7 'letranychus test [resistant] Solvent: 3 parts by weight acetone lztttulsilier: 1 part by weight alkylarylpolyglyeol ether To produce a suitable preparation of active compound. 1 part by weight of the active compound was mixed with the stated amount of solvent containing the stated amount of emulsifier and the concentrate so obtained was diluted with water to the desired concentration.

Bean plants tllms'enlus vulgurzls which had a height of approximately l0-30 cm. were sprayed with the preparation of the active compound until dripping wet. 'l'hese bean plants were heavily infested with the twospotted spider mite ('IeIruIrvehuS uru'z'ue) in all stages of development.

After the specified periods of time. the effectiveness of the preparation of active compound was determined by counting the dead mites. The degree of destruction thus obtained was expressed as a percentage: lOtV/r means that all the spider mites were killed wherein 0% means that none of the spider mites were killed.

The active compounds. the concentrations of the active compounds. the evaluation times and the results can be seen from the following Table 7.

Table 7 (letranychus test resistant) Aetne compounds Concentration Degree of ofacthe destruction compound in i in i after b eight 1 days (H 0 It a,

tt'omparisun) (Ct EXAMPLE 8 H Rhopalosiphum test (systemic action) Solvent: 3 parts by weight acetone Emulsifier: l part by weight alkylarylpolyglycol ether To produce a suitable preparation of active compound. l part by weight of the active compound is mixed with the stated amount of solvent containing the stated amount of emulsifier and the concentrate is diluted with water to the desired concentration ()at plants (Arum: scrim) which have been strongly infested with out aphids (Rt'lII/HI/(Ltifl/HUH pudi) are watered with the preparation of the active compound so that the preparation penetrates into the soil without wetting the leaves of the oat plants. The active com pound is taken up by the out plants from the soil and thus reaches the infested leaves.

After the specified periods of time. the degree of destruetion is determined as a percentage: 100% means fate. the solvent was removed by distillation under re duced pressure. As residue. there was obtained 187 g (84.2% of theory] of O-mcthyl-()-( lldichlorovinylr thionophosphoric acid diester amide as yellowish liquid 5 with the refractive index In, Z [.5322 and the boiling point 96C/t).()()l mm Hg.

The following compounds of formula (I) in which R has the indicated meanings were prepared by analogous processes;

that all the aphids are killed whereas 0% means that 35 none of the aphids are killed.

The active compounds. the concentrations of the active compounds. the evaluation times and the results can be seen from the following Table:

Table 8 (Rhopalosiphum-Test ls) slemic Action! 36.5 g l mole) of gaseous hydrogen chloride were introduced. with stirring. into a solution of 207 g (1 mole) of ()-(2,2-dichlorovinyl) thionophosphorie acid ester diamide (m.p. 62 to 63C) in 500 ml methanol; the internal temperature of the mixture rose gradually. By external cooling. care was taken that 55C was not exceeded.

The reaction mixture was stirred for a further hour at (10C and. after cooling. it was made only just alkaline with a little gaseous ammonia. For deceleration. the mixture was stirred for ll) minutes with about 20 g of activated charcoal. the insoluble portion was filtered off with suction. the solvent was drawn off under reduced pressure. and the residue. dissolved in 500 ml ben/ene. was washed with 150 ml of water until there as a neutral reaction. After drying over sodium sullt will he appreciated that the instant specification and examples are set forth by way of illustration and not limitation. and that various modifications and changes may be made without departing from the spirit and scope of the present invention.

What is claimed is:

t. A diehlorovinylthionophosphoric acid diester amide of the formula 5 H on Is L'l. .C=L'H ()--P in which R is alkyl of l to 8 carbon atoms or lower alkosy lower alkyl.

2. A compound according to claim I in which R is alkyl of one to seven carbon atoms or alkoxyalkyl with one to three carbon atoms in each of the alkyl and alkoxy moiety.

3. The compound according to claim 1 wherein such compound is methyl-O-t 2.2-dichlorovinyl thionophosphoric acid diester amide of the formula 4. The compound according to claim I wherein such 5 compound is O-ethyl-O-(2,2-dichlorovinyl)- thionophosphoric acid diester amide of the formula 7. Thu compound according to claim 1 wherein such compound is O-isohatyl-O-l 2.2-dichlorovinyl thiunophosphoric acid dicstcr amide oi the formula (all cH-uno s cu. ll

8. The compound according to claim I wherein such compound is ()-isopropyl-O-( 2.2-dichlorovinyl thionophosphoric acid diestcr amidc of the formula 

1. A DICHLOROVINYLTHIONOPHOSPHORIC ACID DIESTER AMIDE OF THE FORMULA R-O-P(=S)(-NH2)-O-CH=C(-CL)2 IN WHICH R IS ALKYL OF 1 TO 8 CARBON ATOMS OR LOWER ALKOXY-LOWER ALKYL.
 2. A compound according to claim 1 in which R is alkyl of one to seven carbon atoms or alkoxyalkyl with one to three carbon atoms in each of the alkyl and alkoxy moiety.
 3. The compound according to claim 1 wherein such compound is O-methyl-O-(2,2-dichlorovinyl)-thionophosphoric acid diester amide of the formula
 4. The compound according to claim 1 wherein such compound is O-ethyl-O-(2,2-dichlorovinyl)-thionophosphoric acid diester amide of the formula
 5. The compound according to claim 1 wherein such compound is O-propyl-O-(2,2-dichlorovinyl)-thionophosphoric acid diester amide of the formula
 6. The compound according to claim 1 wherein such compound is O-butyl-O-(2,2-dichlorovinyl)-thionophosphoric acid diester amide of the formula
 7. The compound according to claim 1 wherein such compound is O-isobutyl-O-(2,2-dichlorovinyl)-thionophosphoric acid diester amide of the formula
 8. The compound according to claim 1 wherein such compound is O-isopropyl-O-(2,2-dichlorovinyl)-thionophosphoric acid diester amide of the formula 